TDestructorRegistry.icc

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// Dear emacs, this is -*- c++ -*-
//
// Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
//
#ifndef XAODROOTACCESS_TOOLS_TDESTRUCTORREGISTRY_ICC
#define XAODROOTACCESS_TOOLS_TDESTRUCTORREGISTRY_ICC
 
// System include(s):
#include <typeinfo>
#include <mutex>
 
// Local include(s):
#include "xAODRootAccess/tools/TDestructor.h"
 
namespace xAOD {
 
   /// This function is used by the code to teach the registry about new
   /// types that we want to be able to delete from a type agnostic piece
   /// of code later on.
   ///
   template< class T >
   void TDestructorRegistry::add() {
 
      // Get the type's ID:
      const std::type_info& ti = typeid( T );
 
      // Check if we already have a destructor for it:
      {
         // Get a "read lock":
         std::shared_lock< std::shared_timed_mutex > lock( m_mutex );
         if( m_types.find( &ti ) != m_types.end() ) {
            // Yep, there's nothing to do...
            return;
         }
      }
 
      // Get a "write lock":
      std::unique_lock< std::shared_timed_mutex > lock( m_mutex );
 
      // Create a new destructor object.
      m_types[ &ti ] = std::make_unique< TDestructor< T > >();
 
      return;
   }
 
} // namespace xAOD
 
#endif // XAODROOTACCESS_TOOLS_TDESTRUCTORREGISTRY_ICC